Foundation method



G. W. ALLEN FOUNDATION METHOD Filed Sep Patented Nw. 13, 192s.. f

" UNI-TED.:STATES GEORGE w.` ALLEN, .orf HYDE rARmMAssAcHUsE'Ts, assreivon To,ia.F...sc|:U'n'rE VANT COMPANY, OFHYDE'PABK, MASSACHUSETTS, a CORPORATION Yoriieraassa- 1 Foiiia'natrioivA METHD.

'ApplicationIedSeptember-l, 1923. Serial No. 663,388.

IThe presenty invention relates; to foundal tion. -basesand methods'A of makingi the saine andis :more V.particularly I *concerned with foundations .especiallyadapted for; multiple I power unit installations embodying turbines,y

bed 4.and extended Vupwardly through the iron base. .Notwithstanding the apparent rigidityrof theiironrbase and. the care observed vinf preparing thei foundation ior bed, the act ofzbolting or securingthe base to the bed'alinostinvariably causes ka warping` or distortionaof the base, thus throwing the bearingsiand the units outof proper alignment.A Anyadeviation from perfect alignment must be taken up bythe units, and ordinarily` bythe couplings when a separate shaft is provided for each unit, thereby throwing undue stresses on the bearings and couplings,and also causing excessive vibrations in the entire apparatus.

The object of the present invention is to provide a rigid and secure foundation for power units, and particularly for those of the multiple type, which will ensure proper alignment of the bearings and the units at all times and which will permit removal and replacement of the units Without disturbance to the alignment. i

To this end the invention contemplates the formation ofk a metal base of more or less openl or skeleton construction for bond-V. ing with the concrete, upon which base the` and conveniently inadefan'dithe :entire:.`a'-ip-V paratus thereafter vsliippedi tozthei place aofi installation: .1 `without. disturbing 1 Vthe aligninent. :Thesubsequent pouringofithe'concrete around i the base and? lthe-'.boi'iding.. .of

the two together forms alfoundation ofexceedingly rigid ,and secure; construction; the i concrete completelysurrounding andfilling the interstice's oftliexinetal without. in any lma way tendingJto distort the :base,; and :the A metal base itself serving to.; lstrengthen z, the

concrete bed afterltliemanner ofcco'ncretef and iron-lgirder constructions. Moreover,

since the iron base .is firmly and" permanently retained in..` the bed, .the units. may ibe` re' moved therefrom. for purposes of repair,

aiidviiiayv be replaced thereonmwith the as-; surance thattlieproperalignment wll'bel secured.` Y

In theV accompanying- ,drawingsgFigl lv. is

an elevation, partly .in section,aof:,the. im-

proved foundation vbase .upon .which is mounted :a two-unit installation vconsisting of a-steain tui-'binefandacblower;fFi'g; .21.is`l aV plan' view. of the iron foundation base; and Fig. 3 is a sectional elevation of theV base shown in Fig. 2. l The illustrated embodiment of the invention-comprises a multiple [unit installation ofthe type disclosed in the copendiiigapplication of Allen & Bentley, Serial No.l 658,- 116, led'r-Lyugust 18, 1923, consisting of a steam turbine 6 anda blower 8 connected by a single shaft 10 and mounted upon the iron .Y y

secured together by angle pieces 20 riveted to the channel irons at the corners. A series of bolts 22 extends upwardly through the channel irons, the bolts being lretained in position by lli-shaped clips 24e secured to the inside of the'base directly beneath the heads of the bolts. The threaded portions of the boltseXtend upwardlyabovethe top surface of the base sufficient-ly to provide for securing the units by means of the nuts 25, as illustrated in Fig. 1. The assembled base is adapted to be firmly set in a foundation bed of concrete. To this end the base 12 is placed in its proper position as illustrated in F ig. l, after which the concrete in a plastic condition is poured around thechannel irons to `form the bed 26, the top of which is liush with the upper flanged portions of the channel irons, so that only the upper surface of the metal basel2 isexposed. The concrete ioWs freely 'into the channels and around the bolts 22, thus giving a rigid and permanent bond between the iron and concrete. Y v l In practice it is desirable to mount the units upon the base and adjustthem Jfor proper alignment before shipment to the place of installation.V Upon arrival at the place of installation the entire'assembly is placedv in its desired position upon tempoi-ary supportsfand such further adjust- Vments-3 as may be necessary are made to compensate for Aany slight distortions which may have occurred duringslnpment. This isordmarily carrledout by shnnmingpportions Aofthe base in the usual manner, after Whiclrthe concrete may be poured, as above described, `Without disturbing the units. The base is now permanently set, and in view of the exceedinglystrong connections between the concrete and iron, theioundation is permanently and securely held against any warps or distortions which might produce an objectionable mis-alignment-in the mounted units. By merely removing the nuts 25 from the bolts the units may be'removed at any time for necessary repairswvith the assurance that when the units are replaced and the nuts turned down L tures of the invention. For example, the

invention is not to be considered as limited to the use of a base for supporting merely power units, such as driving and Ydriven units, but may be employed to support structures of any kind Where permanency, rigidity and accuracy of setting are the primary requisites. Y

Having thus described therinvention, what is claimed is: e

l. A method of making a foundation which Yconsists in removably mounting a power unit on a metal base, .aligning and adjusting the unit, and thereafter and While the unit is mounted on the base pouring concrete about the base, whereby the Vunit may be removed and subsequently replaced Without disturbing the alignment.Y

2. A method of setting up a power instal- `lation Which consists in mounting a plurality of power' units upon' a metal base, aligning and adjusting the units, and thereafter setting the base in position and pouring concrete varound the base While the power units are mounted thereon in proper alignment.

7 GEORGE W. ALLEN. 

